Experimental study on sanitary status and cleaning effect of domestic washing machines
10.19405/j.cnki.issn1000-1492.2023.09.023
- Author:
Weilian Sun
1
;
Wei Huang
1
;
Li Tang
1
;
Mei Wu
1
;
Zunzhen Zhang
1
Author Information
1. West China School of Public Health/West China Fourth Hospital , Sichuan University, Chengdu 610041
- Publication Type:Journal Article
- Keywords:
washing machine;
current health status;
microbial contamination;
cleaning effect
- From:
Acta Universitatis Medicinalis Anhui
2023;58(9):1580-1580
- CountryChina
- Language:Chinese
-
Abstract:
Objective : To explore the microbial contamination status of household washing machines and evaluate the improvement effect of professional washing machine cleaning on microbial contamination.
Results :After washing , the total number of fungi in the washing machine ranged from 0 to 49. 22 CFU/cm2 . The fungal clearance rates of the outer wall of the inner cylinder, filter screen , sealring , washing water and detergent drawer box were 99. 36% , 99. 74% , 99. 76% , 99. 51% and 99. 64% , respecing , the number of coliform bacteria was close to 0. Before washing , the average detection rate of Salmonella in the washing machine was 5. 33% , the average detection rate of Shigella was 2. 67% , and no Candida albicans was detected. After washing, Salmonella , Shigella and Candida albicans were not detected. After washing , the total number of fungi in the washing machine ranged from 0 to 49. 22 CFU/cm2 . The fungal clearance rates of the outer wall of the inner cylinder, filter screen , sealring , washing water and detergent drawer box were 99. 36% , 99. 74% , 99. 76% , 99. 51% and 99. 64% , respecing , the number of coliform bacteria was close to 0. Before washing , the average detection rate of Salmonella in the washing machine was 5. 33% , the average detection rate of Shigella was 2. 67% , and no Candida albicans was detected. After washing, Salmonella , Shigella and Candida albicans were not detected.
Conclusion :There are a large number of bacteria and fungi in the household washing machine before cleaning , and there are Salmonella and Shigella contamination. After professional cleaning , the hygiene condition of the washing machine is significantly improved.
- Full text:2024081217104071476家用洗衣机卫生现状及清洗效果的实验研究_孙伟莲.pdf
